Gas burner



April 23, 1929., A. CLARK 1,710,012

GAS BURNER Filed June 30, 1927 l /ma Patented Apr. 23, 1929.

UNITED STATES ANDREW CLARK, OF MONTREAL, QUEBEC CANADA.

GAS BURNER.

Application filed June 30 The invention relates to a gas burner, as described in the present spcci-fic tion and illustrated in the acconipanying drawings tha t form part of the same. r

The invention consists essentially of the novel features of construction ptnnted out broadly and specifically in the claim for novelty following a description containing an explanation in detail of an acceptable form of the invention.

The objects of the invention are to eeonomize in the consumption of gas; to climiuat the explosions due to the backingup of the flame in the act of turning on or oil the gas; to effect a better and a smoother mixture of air and gas and dispense to a considerable tent with the necessity of a large volume of secondary air by completing combustion nearer to the discharge and. thereby avoid ex cessive deposits of carbon on utensils; to reduce the flame to the minimum so that food and other products as well as water can be kept barely warm; to centralize the application of the heating gases and thereby concentrate the heat wherefmost wanted; "to enlarge by comparison the capacity of the burner at a given size and to do this in a simple and cheap arrangement of parts; and generally to provide a safe, durable and economical burner cheap to produce and maintain and of the maximum efficiency.

In the drawings, Figure 1 is a vertical sectional view of the burner, and a longitudinal sectional view of the mixing chan'iber.

Figure 2 is a cross sectional view of a simple form of gzs stove, showing the burner mounted thereon.

Figure 3 is a cross sectional view of the mixer on the line 33 in Figure 1.

Figure 4; is a cross sectional view oil the mixing chamber on the line -14 in Figure 1.

Figure 5 is a cross sectional View of the burner bowl on the line 55 in Figure 1.

Figure 6 is a horizontal sectional view on the line 6()' in Figure 1.

Like numerals of reference indicate corresponding parts in the various figures.

Referring to the drawings the bowl indicated by the numeral 10 is here shown as of cylindrical shape, though it may be square, polygonal or any desired shape in cross section. The bottom 11 of the bowl 10 is formed with a central screw orifice 12 and an inlet 13 from which the tubular socket member 1 1 extends forming a socket 15 for the tubular mixing chamber 16.

Serial N'o. 202,810.

Clheminiug chamber 16 extends out wardly and is slightly contra ted at its outer end l'i just beyond the air inlet holes 18 to term the gas inlet 19. ".lhe spirally coiled wire 20 in coils diametrically decresing in size in tapered spring ii in it 'nserted in the mixing chamber 16 bctn son the a inlets and the inner end and mainta ns llr: position through spring pressure on tn aer wall oil? said chamber, this wire constituting an obstruction about which the stream oi? gas laden air must pass as soon as the requisite dran is created by the coi'ubnstion follow tion. This obstruction facilitates ing of the air and gas to such an extent as I i will produce a smooth mixture in which the ptll't lt .es e't gas are thoroughly intermingled with the air, thereby reducing the chances of explosion in lighting and c1 heating gases and at the same ing combustion thi h inflammable nature of the mixture 1 no to its even com position,

The upper end of the bowl flOi s preferably bevelledat the od l to form the annular discharge port 2:2 between it: i and the deflecting plate 23 similarly beielled atQ-l and adzmted to be adjustably supported in relation to the bowl for determining the sir re oi the t lischarge port 212 and thus regulate the volumes of air indra'wn tlm 'h the air holes 18 and consequently gevernu V we decree of richness in. the mixture being eonsinued.

The deflecting plate 22-3 is supported by a U-shaped bracket 25 and the screw 2 13, the latter being screwed into the screw orifice 12 in the bottom 11 and inserted through the hole 27 in the bottom of the U-shaped bracket 5.

The screw 26 is reduced at its upper slotted. end 28 and spread to retain it in said bracket and at its lower end is termed with the driver slot 29 and capped by the nut 30, which covers the lower slotted end.

The bracket 25 slides in the sleeve 31 rigidly and centrally held by the braces within the bowl 10 and intermediate of the height thereof.

The gas cook 3?) is mounted on the coi'itracted end 17 oi the mixing chamber it; and terms the connection. to the gas pipe ti t from the source of gas supply.

The wire gauze is a permanent covering within the bowl 10 near to the upper end and this effects a better distribution of the smoothed mixture and further increases the completiu uishing the combustibility of the discharge following ignition.

It will be noticed that the mixing chamber 16 and tubular socket member 1a extend at right angles from the bowl 10, slightly above the bottom 11, therefore the mixture entering the bowl does not at once rise to the discharge port, but instead hits the opposite wall surface and is deflected thereby to form a whirl in the incoming stream and this means that any gas not already picked up by the air is surely included in the mixture, thus nullitying all chances of failure in the mining of the air and gas. I

The measure of the cubic contents of the mixing chamber 16 in comparison with the measure of the cubic contents of the bowl 10 is also of great importance and it has been found that the approximate ratio of bowl to mixing chamber is three to one, that is to say, the bowl contains about twelve cubic inches in measurement to about four cubic inches in the mixing chamber of course these dimensions vary according to equipment and in any event are by no means arbitrary.

In operation the gas is turned on and a match or light applied to the dischar e port of the burner and the result is the initiation of a constant draught or suction during combustion and as the mixing of the air and gas particles is so peri'cct, by means of the ob-. structing wires and deflecting burner wall surface and consequent whirl, very low flame ma yrbe assured and al o the utensils can always be brought into extremely close con tact with the higher flame, for there is not the necessity of the auxiliary air so apparent in the average gas burner. The result of this is comparatively little and frequently no carbon accumulation on the utensil, and further the heat is centralized and intense, thereby communicating this heat to the toodstuii, water or othe substance quichly and ellicientl The adjustment of the deflecting plate for produces ai'ced in the burner, in fact iti duces a feed that sends the stream of gas laden air into the bowl where it whirls around and comes back on itself to further facilitate the mixture, and theoretically then rises due to the suction caused by thevacuum created by combustion.

The burner is supported in the heater frame, so that the {lat deflecting plate in its adjusted position will be on or near the same horizontal plane as the Vessel supporting surface of said frame, and this is done by eliminating the necessity of secondary air.

What- I claim is A gas burner comprising a cylindrical bowl of rightangular form in yertical section and a hollow stem projecting therefrom above the bottom thereof and forming a mixing chamher in conununication therewith, said bowl having flat bottom with a central flanged and threaded orifice theretln'ough, a screen across said bowl adjacent to the upper end thereof, a flamedetlecting dish having a central stem extending into the bowl through said screen, an adjusting screw turning in said threaded orifice and pivotally secured to said central stem and a cap and lock nut secured on the projecting end of said adjusting screw.

Sign-ed at Montreal, Canada, this th day of May, 1927.

ANDREW oLARKj 

